Improvement in clover-machines



M H. MANSFIELD.

Clover HuHer.

Patented March 25, 1862.

AIWI will? N, PETERS, Phnkrllhogmphur. Walhillgun. D. C.

accompanying specification, in which- UNITED STATES ATnNr CEO* MARTINMANSFIELD, OF ASHLAND, OHIO.

llVlPROVEIVlENTlN CLOVER-VIACHINES.

Specification formingpart of Letters Patent No. 3-ll.761, (lated March25, 1862.

.To all whom, .it may concern:

` Be it known that I, MARTIN H. MANsFInLD, of Ashland, in the county ofAshland and State of Ohio, have invented new and useful lmprovements inGlover-Hulling Machines, (the same being an improvement on a similarmachine for which a patent was granted to nie under date of June 6,18116;) and I do hereby declare that the following is a fiill andcomplete description of the construction and operation of the same,reference being had to the drawings, making part of t-his Figure l is aside view. Fig. 2 is a view of opposite side of that shown in Fig. l.Fig. 3 is atop view. Fig. 4c is a vertical section in the direction ofthe line x w in Fig. 3. Fig. 5

. is an enlarged view of one of the teeth. Fig. '6 is the cylinderdetached, and Figf a section of the concave detached.

Like letters denote like parts in the several views. p v

The nature of my invention relates to the following-named parts: first,to the herein-described construction of the cylinder-teeth, so thatwhile one part is being worn the other part is being sharpened, theteeth being made double; second, to such an arrangement of the teethupon the cylinder that the teeth themselves can be reversed, or byreversing the ,cylinder itself the teeth will thereby be reversed intheir action; third, suspending the cylinder by means of self-adjustable bearings at the extreme ends of the`shaft iu such a manner thatthe shaft and boxes will always be in line with each other; fourth, inthe introduction of a secondary hopper and feedingreel, by means ofwhich the machine is uni.

formly fed, and at the same time stones and other hard substancesseparated from the clover-heads and prevented from entering into themachine.

The general form and y structure of the machine are shown in Figs. l, 2,and 3.

A, Figs. 3 and 4, is a wirecloth screen which separates the coarserchaff and stems from the separated seed.'

B is a fan-wheel, put in motion by means of a belt, B', for separatingthe lighter chaff' and dust from the seed.

C is the cylinder armed with the double reversible teeth F, `the shaftof which cylinder is hung in self-adjusting boxes D D, andhaving thedriving-pulley E inside ofthe bearings.

These boxes are solid pipe-boxes, and are supaction either section ofthe teeth at pleasure. The cylinder O is armed with peculiarly-- shapedteeth F, Figs. 4,5, and 6. These teeth are double-wedge shaped-that is,they are thickest in the middle and taper towardla point at bothends-and have angular serrated sides, as seen at G, Fig. 5.

-I, Fig. 5, shows the thickest part ofthe tooth, and l F- the thinnerends. These teeth are secured .in regular order to the surface of thecylinder in any convenient manner.

The teeth of the concave K, Fig. 7, are i wedgeshaped, and have alsoangulaiserrated faces, the thinner end being presented to the directmotion of the cylinder, and these teeth are so placed that the teethattached to the' cylinder will pass between them in the direction of thearrow in Fig. 7, the thin ends of the cylinder-teeth entering betweenthe thin ends of the teeth of the concave, the space between them whenthey first enter being about' one inch, but as the cylinder rotates thespace between the thicker ends being contracted to about one-quarter ofan inch, and in this way the clover-heads or other substance is subsjected to a sufficient amount of friction to separate the seeds withoutinjury to the latter.

The concave K K2 is made in two parts. The.

upper part, K', is so connected with the upper part of the framework asto be detachable from the lower section, K2, thus making the concave intwo primary sections, sothat the upper one can be easily removed for thepurpose of getting at the cylinder in order to re- /verse its positionor change the teeth. AThe concave is also divided into secondarysections or lugs, as seen in Fig. 7, which sections are so made as toslide in and out in agroove in the sides of the frame at the ends of theconcave or cylinder-case. At each end of the lug is a tenon which tsinto a corresponding groove at the ends of the concave or cylindercase.

When the machine is at work, the cylinder C moves in the direction ofthe arrowsin Fig. 4, and the wear will be on the serrations of the toothfrom l to l2, and the tooth from l to I2 will be worn in the samedirection-that is, the points L will be worn off in the direction shownin Fig. 5 iu the enlarged section-thus reducing the angles to a moreobtuse form, and thus lessening their action upon the material actedupon; but by reversing the teeth,

the sharper angles L are thus brought into action, and thus by the veryfriction of the teeth upon the material acted upon a selfsharpeningprocess is accomplished.

No difficulty will be experienced in bringing the shaft of the cylinderC into line with the boxes, for these, as before described, are selfadjusting. These changes in the position of the cylinder may continue tobemade as often as the teeth become worn until the angles are nearlyworn off, thus making the ma chine much more durable and effective thanit would be in the old way, as described in my former patent.

M, Figs. l,- 2, 3, and 4., represents the primary hopper. To this isattached a secondary hopper, N, in which is placed a revolving feeder,0, having suitable bearings at the ends of its shaft. This revolvingfeeder is armed with radial teeth which sweep around in the concavity'Pin the direction indicated by the accomplished by hand; and stillanother advantage of very great importance is gained by use of therevolving' feeder.

Stones and other hard substances, which would otherwise pass into themachine and become wedged between the teeth of the con- I cave and theteeth of the cylinder C, are collected in the concavity P, from whencethey can from time to time be removed by the hand of the operator.

What I claim as my improvement, and desire to secure by Letters Patent,is-

The reversible cylinder C, in combination with the self-adjustable boX.D, and primary and secondary hoppers MIl N, with revolving feeder O, asand for the purposes `set forth.

M. H. M ANSFIELD.

" Witnesses z,

W. H. BURRIDGE, A. XV. MOOLELLAN.

